1552216541 has 4 divisors (see below), whose sum is σ = 1552895772. Its totient is φ = 1551537312.

The previous prime is 1552216529. The next prime is 1552216543. The reversal of 1552216541 is 1456122551.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 309936025 + 1242280516 = 17605^2 + 35246^2 .

It is a cyclic number.

It is not a de Polignac number, because 1552216541 - 2¹⁴ = 1552200157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1552216498 and 1552216507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1552216543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336176 + ... + 340761.

It is an arithmetic number, because the mean of its divisors is an integer number (388223943).

Almost surely, 2^1552216541 is an apocalyptic number.

It is an amenable number.

1552216541 is a deficient number, since it is larger than the sum of its proper divisors (679231).

1552216541 is an equidigital number, since it uses as much as digits as its factorization.

1552216541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679230.

The product of its digits is 12000, while the sum is 32.

The square root of 1552216541 is about 39398.1794122520. The cubic root of 1552216541 is about 1157.8459184405.

The spelling of 1552216541 in words is "one billion, five hundred fifty-two million, two hundred sixteen thousand, five hundred forty-one".